In a network application written in Qt, if you want to get all IP addresses on the host machine, you can use QNetworkInterface::allAddresses(). But please bear in mind that this function only returns the addresses of interfaces whose link are UP, as stated in Qt Docs:

This convenience function returns all IP addresses found on the host machine. It is equivalent to calling addressEntries() on all the objects returned by allInterfaces() that are in the QNetworkInterface::IsUp state to obtain lists of QNetworkAddressEntry objects then calling QNetworkAddressEntry::ip() on each of these.

So based on this description, if you want to get…

Philip Ye

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